JP7062515B2 - Mounting device and imaging device - Google Patents

Description

The present invention relates to a mounting device and an imaging device for attaching / detaching accessories such as an interchangeable lens and a lens adapter.

An image pickup device is known in which various lenses (hereinafter referred to as "interchangeable lenses") such as a single focus lens, a zoom lens, a wide-angle lens, a telephoto lens, and a macro lens can be attached and detached. The so-called bayonet coupling method is widely used as a mounting device method for attaching and detaching accessories for an image pickup device such as an interchangeable lens and a lens adapter to and from the image pickup device main body.

However, in the bayonet coupling method, since the interchangeable lens is locked and held by the urging force of the urging member such as a leaf spring, there is a problem that the accessory rattles with respect to the image pickup device main body according to the amount of bending of the spring member. .. In particular, when a large interchangeable lens or the like is attached to the main body of the image pickup apparatus, rattling is likely to occur due to the weight of the interchangeable lens. If the optical axis of the accessory deviates from the central axis of the mounting device due to the rattling between the accessory and the image pickup device main body, the image quality of the captured image deteriorates. Therefore, Patent Document 1 proposes a movable mechanism for moving an interchangeable lens to the image pickup device side as a configuration in which the bayonet type mount device provided in the image pickup device is separated into a fixed mount portion and a movable mount portion.

Japanese Unexamined Patent Publication No. 2013-218149

However, in the mount device described in Patent Document 1, since the movable mechanism and the fastening portion to the image pickup device main body are provided on the radial outer side of the contact surface (mount surface) on the accessory side, the entire mount device becomes large. It ends up.

An object of the present invention is to provide a mounting device capable of suppressing the occurrence of rattling in a state where an accessory is attached while suppressing an increase in size.

The mount device according to the present invention is a mount device to which accessories are attached and detached, and has a substantially annular fixed mount portion fastened to the fixed portion and a substantially annular movable mount portion screwed with the fixed mount portion. The fixed mount portion has a mount surface that comes into contact with the accessory and a first screwed portion, and the movable mount portion has an engaged portion that engages with the engaging portion of the accessory. It has a second screwed portion to be screwed with the first screwed portion, and in the fixed mount portion, a fastening portion to the fixed portion is formed on the mount surface, and the first screwed portion is formed. The screwed portion is provided on the outer peripheral side of the fastening portion.

According to the present invention, it is possible to suppress the increase in size of the mounting device and to suppress the occurrence of rattling when the accessory is attached.

It is an exploded perspective view which shows the structure of the mount device which concerns on embodiment of this invention, and the peripheral parts thereof. It is a perspective view which looked at the interchangeable lens attached to and detached from the mount device from the back side. It is an exploded perspective view of a mounting device. It is a rear view of the movable mount member which constitutes a mount device. It is an enlarged perspective view which shows the rotation stop convex member which constitutes a mounting apparatus, and the periphery thereof. It is a front view which shows the state which fixed the mount device to a fixing member. It is sectional drawing of the arrow view AA and the arrow view BB shown in FIG. 7. It is a schematic diagram explaining the contact operation of an interchangeable lens with respect to a mounting device. It is a perspective view explaining the fixing operation of an interchangeable lens with respect to a mounting device. It is sectional drawing explaining the fixing operation of an interchangeable lens with respect to a mounting apparatus. It is a perspective view explaining the movement of the detection switch in a fixed operation. It is a perspective view which shows the structure of a fixing member. It is a perspective view which shows the state of a movable mount member, an operation member and a fixing member. It is sectional drawing which shows the state of the movable mount member, the operation member and the fixing member at the rotation limit position of the movable mount member. It is an exploded perspective view explaining the arrangement of the thin plate material with respect to a fixed mount member. It is an exploded perspective view which shows the structure of the mount device and its peripheral parts which concerns on another Embodiment. It is an exploded perspective view of the mounting apparatus which concerns on another embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Here, a mount device (so-called lens mount) equipped on the image pickup device main body for attaching / detaching the interchangeable lens to / from the image pickup device main body will be described.

FIG. 1 is an exploded perspective view showing the structure of the mounting device and its peripheral parts according to the embodiment of the present invention. FIG. 1 shows an interchangeable lens 200, a mounting device 300, an electrical contact member 130, a rotation detection substrate 370, and a fixing member 120. The interchangeable lens 200 is an example of an accessory that can be attached to and detached from the mounting device 300, and a method of attaching and detaching the interchangeable lens 200 will be described later.

The mounting device 300 is fixed to the fixing member 120. The electric contact member 130 includes a terminal portion 131 and is fixed to the fixing member 120. The rotation detection board 370 includes a detection switch 371 and is fixed to the fixing member 120. The fixing member 120 is fixed to the image pickup device main body (not shown) and holds the image pickup element (not shown). In the following description, the interchangeable lens 200 side is referred to as front or front, and the fixing member 120 side is referred to as rear or back.

FIG. 2 is a perspective view of the interchangeable lens 200 as viewed from the rear side. The interchangeable lens 200 has an electric contact portion 220, a mount surface 230, mount claw portions 240a to 240c (engagement portions), a cylindrical shaft portion 250, a rotation stop recess 260, and an elastic member 270. The elastic member 270 is a rubber O-ring arranged on the outer periphery of the mount surface 230. The functions and the like of other parts will be described when the operation when the interchangeable lens 200 is attached to the mounting device 300 is explained.

FIG. 3 is an exploded perspective view of the mounting device 300. The alternate long and short dash line shown in FIGS. 3A and 3B is the optical axis of the mounting device 300 and passes through the center of the optical path of the mounting device 300. The mounting device 300 includes a fixed mount member 310, a movable mount member 320, a rotation stop convex member 330, an urging member 335, a holding member 340, an operating member 350, and thin plate members 360a and 360c.

The fixed mount member 310 has a substantially annular shape, and has a mount surface 311, an elastic member contact surface 312, a male screw portion 313 (first screwed portion), a cylindrical hole portion 314, a rotation stop hole portion 316, and a through hole 317a. It has ~ 317d and an engaging hole 318. Through holes 317a to 317d are provided on the mount surface 311. The male screw portion 313 is provided on the outer peripheral side of the through holes 317a to 317d on the optical axis projection (when viewed from the optical axis direction). The mounting device 300 is fixed to the fixing member 120 by passing a screw (not shown) through the through holes 317a to 317d and fastening the screw to the fixing member 120.

The elastic member contact surface 312 is provided on the outer periphery of the mount surface 311 in terms of optical axis projection. The operation member 350 has a knob portion 351 and a rotation object to be detected portion 352 and through holes 353a to 353c. The operating member 350 is fixed to the movable mount member 320 by passing a screw through the through holes 353a to 353c and fastening the screw to the movable mount member 320. Although the details of the thin plate members 360a and 360c will be described later, they are fixed to the surface of the fixed mount member 310 on the opposite side of the mount surface 311 by screws (not shown).

FIG. 4 is a rear view of the movable mount member 320. The movable mount member 320 has a substantially annular shape, and has an inner ring portion 320a, an outer ring portion 320b, a first joint portion 326a, a second joint portion 326b, protrusions 329b, 329c, and an operation member fastening hole 328a to It has 328c. The inner ring portion 320a is arranged inside the outer ring portion 320b, and is radially coupled by the first coupling portion 326a and the second coupling portion 326b. The second connecting portion 326b has a first flat surface portion 327a and a second flat surface portion 327b having both ends flat. The first flat surface portion 327a and the second flat surface portion 327b will be described in detail later, but the movable mount member 320 according to the positional relationship between the first rotation stop portion 122a and the second rotation stop portion 122b of the fixing member 120. It is a contact part that plays a role of defining the amount of rotation of the.

Mount claw portions 321a to 321c (engaged portions) that engage with the mount claw portions 240a to 240c are provided on the inner peripheral side of the inner ring portion 320a. An engaging shaft portion 325 is provided on the outer peripheral portion of the inner ring portion 320a. A female threaded portion 323 (second screwed portion) is provided on the inner peripheral portion of the outer ring portion 320b. The protruding portions 329b and 329c are provided between the first coupling portion 326a and the second coupling portion 326b in the outer ring portion 320b, and have a shape protruding toward the inner ring portion 320a. The operation member fastening hole 328a is provided in the first joint portion 326a, the operation member fastening hole 328b is provided in the protrusion 329b, and the operation member fastening hole 328c is provided in the protrusion 329c. The operating member 350 is fixed to the movable mount member 320 by fastening the screw through which the through holes 353a to 353c are inserted to the operating member fastening holes 328a to 328c.

FIG. 5 is an enlarged perspective view showing the rotation stop convex member 330 and its periphery. FIG. 6 is a front view showing a state in which the mounting device 300 is fixed to the fixing member 120. FIG. 7A is a cross-sectional view taken along the line AA shown in FIG. 7 and shows a cross-sectional view at the position of the rotation stop convex member 330. FIG. 7B is a cross-sectional view taken along the line BB shown in FIG. 7 and represents a cross section at the position of the through hole 317a.

As shown in FIG. 7B, the female threaded portion 323 of the movable mount member 320 is screwed with the male threaded portion 313 of the fixed mount member 310. As a result, when the movable mount member 320 is rotated around the optical axis, the depth at which the female screw portion 323 and the male screw portion 313 are screwed changes according to the rotation direction, and the movable mount member 320 becomes the fixed mount member 310. On the other hand, it has a structure that moves in the direction of the optical axis. The engaging shaft portion 325 of the movable mount member 320 engages with the engaging hole portion 318 of the fixed mount member 310. This stabilizes the position of the movable mount member 320 with respect to the fixed mount member 310. A screw 301a is inserted into the through hole 317a, and the screw 301a is fastened to the fixing member 120 so that the fixing mount member 310 is fixed to the fixing member 120 with the thin plate member 360a interposed therebetween.

As shown in FIGS. 5 and 7A, the rotation stop convex member 330 has a first convex portion 331 and a second convex portion 332. The first convex portion 331 engages with the rotation stop hole portion 316 and protrudes from the mount surface 311. The second convex portion 332 engages with the urging member 335. The urging member 335 urges the rotation stop convex member 330 in a direction protruding from the mount surface 311. Further, the holding member 340 has a rotation stop hole portion 341 and a through hole 342. The rotation stop hole portion 341 engages with the second convex portion 332. A screw (not shown) is inserted into the through hole 342, and the screw is fastened to the fixed mount member 310 to fix the holding member 340 to the fixed mount member 310. With such a configuration, the rotation stop convex member 330 is held freely with respect to the fixed mount member 310 in the optical axis direction.

Next, a method of mounting the interchangeable lens 200 on the mounting device 300 will be described. The interchangeable lens 200 can be attached in two steps: a contact operation with respect to the mounting device 300 and a fixing operation from the contacted state. FIG. 8 is a schematic view illustrating the contact operation of the interchangeable lens 200 with respect to the mount device 300, and is a partial perspective view of the interchangeable lens 200 and the mount device 300 as viewed from the rear side in a state before the contact operation is performed. It is shown by.

In the abutting operation, the rotation stop concave portion 260 of the interchangeable lens 200 and the first convex portion 331 of the rotation stop convex member 330 are fitted. Subsequently, the cylindrical shaft portion 250 of the interchangeable lens 200 and the cylindrical hole portion 314 of the mounting device 300 are fitted. By inserting the interchangeable lens 200 into the mounting device 300 in the posture shown in FIG. 8, these two fitting portions can be fitted.

Then, the mount surface 230 of the interchangeable lens 200 and the mount surface 311 of the mount device 300 are brought into contact with each other. Here, if the interchangeable lens 200 is rotated and deviated from the posture shown in FIG. 8 about the center of the optical axis, the first convex portion 331 and the rotation stop recess 260 do not fit. However, since the rotation stop convex member 330 is freely pushable, it is pushed by the mount surface 230 of the interchangeable lens 200. Therefore, even when the first convex portion 331 and the rotation stop recess 260 are not fitted, the cylindrical shaft portion 250 and the cylindrical hole portion 314 can be fitted.

When the cylindrical shaft portion 250 and the cylindrical hole portion 314 are fitted, the mount surface 230 of the interchangeable lens 200 and the mount surface 311 of the mount device 300 (fixed mount member 310) are in contact with each other. By rotating the interchangeable lens 200 with respect to the mount device 300 in that state, the rotation stop recess 260 can be moved to a position where it fits into the rotation stop convex member 330. When the rotation stop concave portion 260 moves to the position of the rotation stop convex member 330 in this way, the rotation stop convex member 330 that has been pushed by the mount surface 230 of the interchangeable lens 200 and retracted to the mount surface 311 of the mount device 300 moves from the mount surface 311. Protrude. As a result, the rotation stop convex member 330 fits into the rotation stop recess 260.

The operation of rotating the interchangeable lens 200 with respect to the mount device 300 causes the electric contact portion 220 of the interchangeable lens 200 and the contact terminal portion of the electric contact member 130 to rub against each other. As a result, a self-cleaning effect of removing impurities and the like adhering to the contact terminal portion can be obtained, and contact reliability of the contact terminal portion can be ensured.

When the rotation stop convex member 330 and the rotation stop recess 260 are fitted, the interchangeable lens 200 cannot rotate with respect to the mounting device 300. However, since the interchangeable lens 200 is not fixed to the mount device 300 in the optical axis direction, the contact state is easily released by moving the interchangeable lens 200 so as to move away from the mount device 300 in the optical axis direction. can do.

9 (a) to 9 (c) are perspective views illustrating an operation of fixing the interchangeable lens 200 to the mounting device 300. 10 (a) to 10 (c) are cross-sectional views corresponding to FIGS. 9 (a) to 9 (c). 11 (a) to 11 (c) are perspective views illustrating the movement of the detection switch 371 in correspondence with FIGS. 9 (a) to 9 (c).

9 (a), 10 (a), and 11 (a) show a state in which the mount surface 230 of the interchangeable lens 200 before the fixing operation is in contact with the mount surface 311 of the mount device 300. In this state, the mount claws 240a to 240c of the interchangeable lens 200 and the mount claws 321a to 321c of the movable mount member 320 of the mount device 300 do not overlap each other on the optical axis projection.

Here, the detection switch 371 of the rotation detection board 370 has a detection movable portion 371a, and when the detection movable portion 371a is pressed, the detection switch 371 is in the detection state. In the present embodiment, when the detection switch 371 is in the detection state, telecommunications is performed between the interchangeable lens 200 and the image pickup device main body through the electric contact portion 220 and the electric contact member 130. In the state of FIG. 11A, the detection movable portion 371a is not pressed by the rotation-detected portion 352, and thus is in the non-detection state. Therefore, as shown in FIG. 10A, the terminal 131 of the electric contact member 130 is in contact with the electric contact portion 220 of the interchangeable lens, but in this state, the electric contact portion 220 and the electric contact member 130 communicate with each other. Is not done.

The elastic member 270 of the interchangeable lens 200 is in pressure contact with the elastic member contact surface 312 of the mounting device 300. As shown in FIGS. 3A and 7B, the through holes 317a to 317d are arranged on the inner peripheral side of the male threaded portion 313. If the through holes 317a to 317d are provided on the outer peripheral side of the male screw portion 313, the through holes 317a to 317d will be located on the elastic member contact surface 312, and the elastic member contact surface 312 will have irregularities. In the configuration of this embodiment, the elastic member contact surface 312 is not provided with through holes 317a to 317d, so that the elastic member contact surface 312 is a smooth surface without unevenness. If the elastic member contact surface 312 has irregularities, it becomes difficult to secure the airtightness between the interchangeable lens 200 and the mounting device 300 by the elastic member 270. On the other hand, since the elastic member contact surface 312 is formed of a smooth surface without unevenness, it is possible to secure the airtightness between the interchangeable lens 200 and the mounting device 300 by pressure welding of the elastic member 270.

9 (b), 10 (b), and 11 (b) show a state in which the interchangeable lens 200 is being fixed to the mounting device 300. From the state of FIG. 9A, the knob portion 351 of the mount device 300 is rotated counterclockwise around the optical axis when viewed from the front side of the mount device 300. Since the operation member 350 on which the knob portion 351 is arranged is fastened to the movable mount member 320, the movable mount member 320 rotates about the optical axis as the knob portion 351 rotates. As a result, the mount claws 240a to 240c of the interchangeable lens 200 and the mount claws 321a to 321c of the mount device 300 begin to overlap on the optical axis projection.

Here, the female threaded portion 323 of the movable mount member 320 is screwed with the male threaded portion 313 of the fixed mount member 310. This screwed portion has a reverse screw shape, and the movable mount member 320 moves toward the back side with respect to the fixed mount member 310 by rotating in the counterclockwise direction when viewed from the front side. At this time, there is a gap G between the mount claw portion 321b of the mount device 300 and the mount claw portion 240b of the interchangeable lens 200. Although not shown, similarly, there are similar gaps between the mount claw portion 321a and the mount claw portion 240a, and between the mount claw portion 321c and the mount claw portion 240c. That is, only the size of the gap G causes rattling between the interchangeable lens 200 and the mounting device 300.

In this state, as shown in FIG. 11B, the detection switch 371 is in the detection state because the detection movable portion 371a is pressed by the stepped shape of the rotation detected portion 352 of the operation member 350. Therefore, telecommunications is performed between the interchangeable lens 200 and the image pickup apparatus main body through the electric contact portion 220 and the electric contact member 130.

9 (c), 10 (c), and 11 (c) show a state in which the interchangeable lens 200 has been fixed to the mounting device 300. The knob portion 351 of the mount device 300 is further rotated counterclockwise around the optical axis when viewed from the front of the mount device 300, as compared with the state of FIG. 9B. Then, by screwing the female threaded portion 323 and the male threaded portion 313, the movable mount member 320 moves further to the back side than the state of FIG. 9B with respect to the fixed mount member 310. As a result, the mount claw portion 321b of the mount device 300 and the mount claw portion 240b of the interchangeable lens 200 come into contact with each other. Similarly, the mount claw portion 321a and the mount claw portion 240a are in contact with each other, and the mount claw portion 321c and the mount claw portion 240c are also in contact with each other. Therefore, there is no gap between the mount claw portions 321a to 321c and the mount claw portions 240a to 240c.

In this way, the interchangeable lens 200 is pulled toward the mounting device 300 by using the tightening force of the screw generated by rotating the movable mount member 320 with respect to the fixed mount member 310. As a result, the interchangeable lens 200 can be fixed (mounted) to the mounting device 300 without rattling.

In the state of FIG. 11C, as in the state of FIG. 11B, the detection switch 371 is in the detection state because the detection movable portion 371a is pressed by the rotation detected portion 352 of the operation member 350. ing. Therefore, telecommunications is performed between the interchangeable lens 200 and the image pickup apparatus main body through the electric contact portion 220 and the electric contact member 130.

Next, the relationship between the operation of the mounting device 300, the operating member 350, and the fixing member 120 when the interchangeable lens 200 is mounted on the mounting device 300 will be described. FIG. 12A is a perspective view showing the overall structure of the fixing member 120. FIG. 12B is a partially enlarged perspective view of the fixing member 120. 13 (a) to 13 (c) are perspective views showing the states of the movable mount member 320, the operating member 350, and the fixing member 120, respectively, in correspondence with FIGS. 9 (a) to 9 (c).

As shown in FIG. 12A, the fixing member 120 has screw boss portions 121a to 121d (projections). Screws inserted into the through holes 317a to 317d formed in the fixed mounting member 310 of the mounting device 300 are fastened to each of the screw boss portions 121a to 121d, whereby the mounting device 300 is fixed to the fixing member 120. As shown in FIG. 12B, the fixing member 120 has a first rotation stop portion 122a and a second rotation stop portion 122b as engaging portions that regulate the rotation amount of the movable mount member 320. In each of the states of FIGS. 13 (a) to 13 (c), the screw boss portions 121a to 121d are located between the inner ring portion 320a and the outer ring portion 320b of the movable mount member 320, but do not come into contact with the movable mount member 320. It is arranged.

The rotation range of the movable mount member 320 and the operation member 350 is defined by the first rotation stop portion 122a, the second rotation stop portion 122b, the first flat surface portion 327a, and the second flat surface portion 327b. FIG. 14 is a cross-sectional view showing the states of the movable mount member 320, the operating member 350, and the fixing member 120 at the rotation limit position of the movable mount member 320. FIG. 14A shows a position where the movable mount member 320 is rotated to the maximum in the clockwise direction when viewed from the front side. In this state, the first flat surface portion 327a and the fixing member of the movable mount member 320 are shown. The first rotation stop portion 122a of the 120 comes into contact with the first rotation stop portion 122a. FIG. 14B shows a position where the movable mount member 320 is rotated to the maximum counterclockwise when viewed from the front side. In this state, the second flat surface portion 327b and the fixing member of the movable mount member 320 are shown. The second rotation stop portion 122b of the 120 comes into contact with the second rotation stop portion 122b. The states of FIGS. 9 (a) to 9 (c) are the states at the rotational position between FIGS. 14 (a) and 14 (b).

As shown in FIGS. 13 (a) to 13 (c), the bisbos portions 121a to 121d enter (become convex) between the outer circumference of the inner ring portion 320a of the movable mount member 320 and the outer circumference of the outer ring portion 320b. The movable mount member 320 does not come into contact with anything other than the above-mentioned contact portion. The first connecting portion 326a and the protruding portions 329b and 329c of the movable mount member 320 are connected to the fixing member 120 regardless of the rotation limit position shown in FIGS. 14A and 14B and any position during rotation between them. Do not touch.

As described above, the fixing mount member 310 and the fixing member 120 are fastened by screws (fastening members) with the through holes 317a to 317d and the screw boss portions 121a to 121d as fastening portions. In the mounting device 300, the movable mounting member 320 is required after arranging these fastening portions on the inner peripheral side of the screwed portion between the male threaded portion 313 of the fixed mount member 310 and the female threaded portion 323 of the movable mount member 320. It is possible to secure the amount of rotation.

Subsequently, the functions of the thin plate materials 360a and 360c will be described. FIG. 15 is an exploded perspective view illustrating the arrangement of the thin plate members 360a and 360c with respect to the fixed mount member 310. The thin plate material 360a has an arc shape (bow shape), and has a first through hole 361a and a second through hole 362a, 362b. The thin plate material 360c has an arc shape (bow shape), and has a first through hole 361c and a second through hole 362c, 362d. A screw (not shown) is inserted into the first through holes 361a and 361c, and the screw is fastened to the thin plate material fastening portions 319a and 319c of the fixed mount member 310. The screws (not shown) inserted into the through holes 317a to 317d of the fixing mount member 310 also insert through the second through holes 362a to 362d and are fastened to the screw boss portions 121a to 121d of the fixing member 120.

Therefore, by changing the thickness of the thin plate members 360a and 360c, the distance between the mounting surface 311 of the mounting device 300 and the screw boss portions 121a to 121d of the fixing member 120 can be adjusted. That is, the distance between the image sensor (not shown) held by the fixing member 120 and the mount surface 311 can be adjusted. At that time, the angle of the mount surface 311 with respect to the image pickup element can be adjusted by using the thin plate material 360a and the thin plate material 360c having different thicknesses. The thin plate members 360a and 360c are not necessarily arranged between the fixed mount member 310 and the fixing member 120, and the thin plate members 360a and 360c may not be arranged.

As shown in FIG. 15, the thin plate members 360a and 360c can be assembled to the fixed mount member 310 while avoiding the movable mount member 320. Further, the thin plate members 360a and 360c can be assembled to the fixed mount member 310 and removed from the fixed mount member 310 in a state where the mount device 300 is not fastened to the fixed member 120.

By the way, it is also possible to attach another mounting device (mounting device) to the fixing member 120 instead of the above-mentioned mounting device 300. Therefore, next, another mounting device that can be attached to the fixing member 120 will be described.

FIG. 16 is an exploded perspective view showing the structure of the mount device 1300, which is a mount device according to another embodiment of the present invention, and its peripheral parts. Since the interchangeable lens 200, the electric contact member 130, the rotation detection substrate 370, and the fixing member 120 shown in FIG. 16 are the same as those shown in FIG. 1, the description thereof will be omitted. 17 (a) and 17 (b) are exploded perspective views of the mounting device 1300. The mounting device 1300 is a bayonet type mounting device. The mounting device 1300 includes a mounting member 150, an urging member 160, a rotation stop convex member 170, an urging member 175, an operating member 180, an urging member 188, and an annular member 190.

The mount member 150 has a mount surface 151, mount claw portions 152a to 152c, through holes 153a to 153d, a hole portion 154, and a cylindrical hole portion 155. The urging member 160 has urging portions 161a to 161c. Leaf springs are used for the urging portions 161a to 161c. The rotation stop convex member 170 has a first convex portion 171 and a second convex portion 172 and an arm portion 173. The first convex portion 171 engages with the hole portion 154 of the mount member 150 and protrudes from the mount surface 151.

A compression spring is used for the urging member 175. The urging member 175 engages with the second convex portion 172 and urges the rotation stop convex member 170 in the direction of projecting from the mount surface 151. The operation member 180 has an operation unit 181, an arm portion 182, and a shaft portion 183. The arm portion 182 presses the arm portion 173 in conjunction with the operation in which the operation member 180 is pressed. A compression spring is used for the urging member 188. The urging member 188 engages with the shaft portion 183 and urges the operating member 180 in a direction in which the operating member 180 protrudes from the image pickup apparatus 1100.

The annular member 190 has a first hole portion 191 and a second hole portion 192, through holes 193a to 193d, and a rotation detection portion 194. The first hole portion 191 engages with the second convex portion 172. The second hole portion 192 engages with the shaft portion 183. By arranging the through holes 317a to 317d of the mounting device 300 (see FIG. 3) and the through holes 153a to 153d of the mounting device 1300 at the same position on the optical axis projection, the fastening portion of the fixing member 120 is shared in common. It will be possible to use it. That is, the mount device 300 and the mount device 1300 can be exchanged and used according to the user's request.

Although the present invention has been described in detail based on the preferred embodiments thereof, the present invention is not limited to these specific embodiments, and various embodiments within the range not deviating from the gist of the present invention are also included in the present invention. included. Further, each of the above-described embodiments is merely an embodiment of the present invention, and each embodiment can be appropriately combined. For example, in the above embodiment, the mount device provided in the image pickup device main body has been described, but the mount device according to the present invention may be provided in the mount adapter. Further, in the above embodiment, the movable mount member 320 is provided with the female screw portion 323 and the fixed mount member 310 is provided with the male screw portion 313. On the contrary, the movable mount member 320 is provided with the male screw portion and the fixed mount member 310 is provided with the female screw portion. A configuration may be provided in which a portion is provided. In this case, the rotation direction of the movable mount member 320 when the interchangeable lens 200 is mounted is clockwise when viewed from the front side.

120 Fixing member 121a-121d Screw boss part 200 Interchangeable lens 300 Mounting device 310 Fixed mounting member 311 Mount surface 313 Male thread part 317a-317d Through hole 320 Movable mount member 321a-321c Mount claw part 323 Female thread part 330 Rotation stop convex member

Claims (11)

A mounting device to which accessories can be attached and detached.
A substantially annular fixed mount that is fastened to the fixed part,
A substantially annular movable mount portion that is screwed with the fixed mount portion is provided.
The fixed mount portion is
The mounting surface that comes into contact with the accessory,
With a first screwed portion,
The movable mount portion is
An engaged portion that engages with the engaging portion of the accessory,
It has a second screwed portion to be screwed with the first screwed portion, and has.
A mounting device characterized in that, in the fixed mount portion, a fastening portion to the fixing portion is formed on the mounting surface, and the first screwed portion is provided on the outer peripheral side of the fastening portion. The fastening portion is a through hole formed at a position corresponding to the fastening hole provided in the fixing portion, and the fixing mount portion is fixed by passing the fastening member through the through hole and fixing the fastening portion to the fastening hole. The mounting device according to claim 1, wherein the mounting device is fixed to a fixed portion. A convex member with a convex portion and
The mounting device according to claim 1 or 2, further comprising an urging means for urging the convex member so that the convex portion protrudes from the mount surface of the fixed mount portion. The mounting device according to claim 3, wherein the convex portion is fitted with a concave portion provided in the accessory to restrict rotation of the accessory with respect to the fixed mount portion. An operation unit coupled to the movable mount unit and
The mounting device according to any one of claims 1 to 4, further comprising a detection means for detecting rotation of the movable mount portion with respect to the fixed mount portion by operating the operation unit. The fixed mount portion is provided with an arc-shaped thin plate material fixed to the surface opposite to the mount surface.
The mounting device according to any one of claims 1 to 5, wherein the thin plate material comes into contact with the fixing portion. The movable mount portion is
With the outer ring
The inner ring portion arranged inside the outer ring portion and the inner ring portion
It has a coupling portion that connects the outer ring portion and the inner ring portion, and has a coupling portion.
Claims 1 to 1, wherein the engaged portion is provided on the inner peripheral side of the inner ring portion, and the second screwed portion is provided on the inner peripheral side of the outer ring portion. 6. The mounting device according to any one of 6. The fastening portion is formed on the protrusion provided on the fixing portion, and the fastening portion is formed.
In a state where the fixed mount portion is fastened to the fixed portion, the protrusion portion enters between the inner circumference of the outer ring portion and the outer circumference of the inner ring portion.
17. Mounting device. When the movable mount portion is rotated around its central axis, the depth at which the first screwed portion and the second screwed portion are screwed changes according to the rotation direction, so that the movable mount portion The mounting device according to any one of claims 1 to 8, wherein the fixed mounting portion moves in the axial direction of the central axis. The movable mount portion has a mount claw portion and has a mount claw portion.
The movable mount portion is in contact with the mount claw portion of the accessory and the mount surface of the fixed mount portion is in contact with the mount claw portion of the movable mount portion. By rotating the movable mount portion so as to move in the axial direction toward the fixed portion, the mount claw portion of the movable mount portion engages with the mount claw portion of the accessory to engage the mount claw portion of the accessory. The mounting device according to claim 9, wherein the mounting device is pulled toward the fixed portion. The main body of the image pickup device and
The mounting device according to any one of claims 1 to 10.
An image pickup device comprising: a fixing member for attaching the mount device to the image pickup device main body.

Images